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<title>Qt 4.6: Model/View Programming</title>
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<td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="functions.html"><font color="#004faf">All Functions</font></a> · <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><p>
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<h1 class="title">Model/View Programming<br /><span class="subtitle"></span>
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<ul>
<li><a href="model-view-introduction.html">An Introduction to Model/View Programming</a> <ul><li><a href="model-view-introduction.html#the-model-view-architecture">The Model/View Architecture</a></li>
<ul><li><a href="model-view-introduction.html#models">Models</a></li>
<li><a href="model-view-introduction.html#views">Views</a></li>
<li><a href="model-view-introduction.html#delegates">Delegates</a></li>
<li><a href="model-view-introduction.html#sorting">Sorting</a></li>
<li><a href="model-view-introduction.html#convenience-classes">Convenience Classes</a></li>
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<li><a href="model-view-introduction.html#the-model-view-components">The Model/View Components</a></li>
</ul>
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<li><a href="model-view-using.html">Using Models and Views</a> <ul><li><a href="model-view-using.html#introduction">Introduction</a></li>
<li><a href="model-view-using.html#using-views-with-an-existing-model">Using Views with an Existing Model</a></li>
</ul>
</li>
<li><a href="model-view-model.html">Model Classes</a> <ul><li><a href="model-view-model.html#basic-concepts">Basic Concepts</a></li>
<ul><li><a href="model-view-model.html#model-indexes">Model Indexes</a></li>
<li><a href="model-view-model.html#rows-and-columns">Rows and Columns</a></li>
<li><a href="model-view-model.html#parents-of-items">Parents of Items</a></li>
<li><a href="model-view-model.html#item-roles">Item Roles</a></li>
<li><a href="model-view-model.html#summary-of-concepts">Summary of Concepts</a></li>
<li><a href="model-view-model.html#using-model-indexes">Using Model Indexes</a></li>
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<li><a href="model-view-model.html#further-reading">Further Reading</a></li>
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<li><a href="model-view-creating-models.html">Creating New Models</a> <ul><li><a href="model-view-creating-models.html#introduction">Introduction</a></li>
<li><a href="model-view-creating-models.html#designing-a-model">Designing a Model</a></li>
<li><a href="model-view-creating-models.html#a-read-only-example-model">A Read-Only Example Model</a></li>
<ul><li><a href="model-view-creating-models.html#dimensions-of-the-model">Dimensions of The Model</a></li>
<li><a href="model-view-creating-models.html#model-headers-and-data">Model Headers and Data</a></li>
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<li><a href="model-view-creating-models.html#an-editable-model">An Editable Model</a></li>
<ul><li><a href="model-view-creating-models.html#making-the-model-editable">Making the Model Editable</a></li>
<li><a href="model-view-creating-models.html#inserting-and-removing-rows">Inserting and Removing Rows</a></li>
</ul>
<li><a href="model-view-creating-models.html#next-steps">Next Steps</a></li>
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<li><a href="model-view-view.html">View Classes</a> <ul><li><a href="model-view-view.html#concepts">Concepts</a></li>
<li><a href="model-view-view.html#using-an-existing-view">Using an Existing View</a></li>
<ul><li><a href="model-view-view.html#using-a-model">Using a Model</a></li>
<li><a href="model-view-view.html#using-multiple-views-onto-the-same-model">Using Multiple Views onto the Same Model</a></li>
</ul>
<li><a href="model-view-view.html#handling-selections-of-items">Handling Selections of Items</a></li>
<ul><li><a href="model-view-view.html#sharing-selections-between-views">Sharing Selections Between Views</a></li>
</ul>
</ul>
</li>
<li><a href="model-view-selection.html">Handling Selections in Item Views</a> <ul><li><a href="model-view-selection.html#concepts">Concepts</a></li>
<ul><li><a href="model-view-selection.html#current-item-and-selected-items">Current Item and Selected Items</a></li>
</ul>
<li><a href="model-view-selection.html#using-a-selection-model">Using a Selection Model</a></li>
<ul><li><a href="model-view-selection.html#selecting-items">Selecting Items</a></li>
<li><a href="model-view-selection.html#reading-the-selection-state">Reading the Selection State</a></li>
<li><a href="model-view-selection.html#updating-a-selection">Updating a Selection</a></li>
<li><a href="model-view-selection.html#selecting-all-items-in-a-model">Selecting All Items in a Model</a></li>
</ul>
</ul>
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<li><a href="model-view-delegate.html">Delegate Classes</a> <ul><li><a href="model-view-delegate.html#concepts">Concepts</a></li>
<li><a href="model-view-delegate.html#using-an-existing-delegate">Using an Existing Delegate</a></li>
<li><a href="model-view-delegate.html#a-simple-delegate">A Simple Delegate</a></li>
<ul><li><a href="model-view-delegate.html#providing-an-editor">Providing an Editor</a></li>
<li><a href="model-view-delegate.html#submitting-data-to-the-model">Submitting Data to the Model</a></li>
<li><a href="model-view-delegate.html#updating-the-editor-s-geometry">Updating the Editor's Geometry</a></li>
<li><a href="model-view-delegate.html#editing-hints">Editing Hints</a></li>
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<li><a href="model-view-convenience.html">Item View Convenience Classes</a> <ul><li><a href="model-view-convenience.html#overview">Overview</a></li>
<li><a href="model-view-convenience.html#list-widgets">List Widgets</a></li>
<li><a href="model-view-convenience.html#tree-widgets">Tree Widgets</a></li>
<li><a href="model-view-convenience.html#table-widgets">Table Widgets</a></li>
<li><a href="model-view-convenience.html#common-features">Common Features</a></li>
<ul><li><a href="model-view-convenience.html#hidden-items">Hidden Items</a></li>
<li><a href="model-view-convenience.html#selections">Selections</a></li>
<li><a href="model-view-convenience.html#searching">Searching</a></li>
</ul>
</ul>
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<li><a href="model-view-dnd.html">Using Drag and Drop with Item Views</a> <ul><li><a href="model-view-dnd.html#overview">Overview</a></li>
<li><a href="model-view-dnd.html#using-convenience-views">Using Convenience Views</a></li>
<li><a href="model-view-dnd.html#using-model-view-classes">Using Model/View Classes</a></li>
<ul><li><a href="model-view-dnd.html#enabling-drag-and-drop-for-items">Enabling Drag and Drop for Items</a></li>
<li><a href="model-view-dnd.html#encoding-exported-data">Encoding Exported Data</a></li>
<li><a href="model-view-dnd.html#inserting-dropped-data-into-a-model">Inserting Dropped Data into a Model</a></li>
<li><a href="model-view-dnd.html#decoding-imported-data">Decoding Imported Data</a></li>
</ul>
</ul>
</li>
<li><a href="model-view-proxy-models.html">Proxy Models</a> <ul><li><a href="model-view-proxy-models.html#overview">Overview</a></li>
<li><a href="model-view-proxy-models.html#using-proxy-models">Using Proxy Models</a></li>
<li><a href="model-view-proxy-models.html#customizing-proxy-models">Customizing Proxy Models</a></li>
<ul><li><a href="model-view-proxy-models.html#custom-filtering-models">Custom Filtering Models</a></li>
<li><a href="model-view-proxy-models.html#custom-sorting-models">Custom Sorting Models</a></li>
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</ul>
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<li><a href="model-view-model-subclassing.html">Model Subclassing Reference</a> <ul><li><a href="model-view-model-subclassing.html#introduction">Introduction</a></li>
<li><a href="model-view-model-subclassing.html#item-data-handling">Item Data Handling</a></li>
<ul><li><a href="model-view-model-subclassing.html#read-only-access">Read-Only Access</a></li>
<li><a href="model-view-model-subclassing.html#editable-items">Editable Items</a></li>
<li><a href="model-view-model-subclassing.html#resizable-models">Resizable Models</a></li>
<li><a href="model-view-model-subclassing.html#lazy-population-of-model-data">Lazy Population of Model Data</a></li>
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<li><a href="model-view-model-subclassing.html#navigation-and-model-index-creation">Navigation and Model Index Creation</a></li>
<ul><li><a href="model-view-model-subclassing.html#parents-and-children">Parents and Children</a></li>
</ul>
<li><a href="model-view-model-subclassing.html#drag-and-drop-support-and-mime-type-handling">Drag and Drop Support and MIME Type Handling</a></li>
<ul><li><a href="model-view-model-subclassing.html#mime-data">MIME Data</a></li>
<li><a href="model-view-model-subclassing.html#accepting-dropped-data">Accepting Dropped Data</a></li>
<li><a href="model-view-model-subclassing.html#convenience-views">Convenience Views</a></li>
</ul>
<li><a href="model-view-model-subclassing.html#performance-optimization-for-large-amounts-of-data">Performance Optimization for Large Amounts of Data</a></li>
</ul>
</li>
</ul>
<a name="model-view-classes"></a><a name="all-model-view-classes"></a>
<h3>All Model/View Classes</h3>
<p>These classes use the model/view design pattern in which the underlying data (in the model) is kept separate from the way the data is presented and manipulated by the user (in the view).</p>
<p><table width="100%" class="annotated" cellpadding="2" cellspacing="1" border="0">
<tr valign="top" class="odd"><th><a href="qabstractitemdelegate.html">QAbstractItemDelegate</a></th><td>Used to display and edit data items from a model</td></tr>
<tr valign="top" class="even"><th><a href="qabstractitemmodel.html">QAbstractItemModel</a></th><td>The abstract interface for item model classes</td></tr>
<tr valign="top" class="odd"><th><a href="qabstractitemview.html">QAbstractItemView</a></th><td>The basic functionality for item view classes</td></tr>
<tr valign="top" class="even"><th><a href="qabstractlistmodel.html">QAbstractListModel</a></th><td>Abstract model that can be subclassed to create one-dimensional list models</td></tr>
<tr valign="top" class="odd"><th><a href="qabstractproxymodel.html">QAbstractProxyModel</a></th><td>Base class for proxy item models that can do sorting, filtering or other data processing tasks</td></tr>
<tr valign="top" class="even"><th><a href="qabstracttablemodel.html">QAbstractTableModel</a></th><td>Abstract model that can be subclassed to create table models</td></tr>
<tr valign="top" class="odd"><th><a href="qcolumnview.html">QColumnView</a></th><td>Model/view implementation of a column view</td></tr>
<tr valign="top" class="even"><th><a href="qdatawidgetmapper.html">QDataWidgetMapper</a></th><td>Mapping between a section of a data model to widgets</td></tr>
<tr valign="top" class="odd"><th><a href="qdirmodel.html">QDirModel</a></th><td>Data model for the local filesystem</td></tr>
<tr valign="top" class="even"><th><a href="qfilesystemmodel.html">QFileSystemModel</a></th><td>Data model for the local filesystem</td></tr>
<tr valign="top" class="odd"><th><a href="qheaderview.html">QHeaderView</a></th><td>Header row or header column for item views</td></tr>
<tr valign="top" class="even"><th><a href="qitemdelegate.html">QItemDelegate</a></th><td>Display and editing facilities for data items from a model</td></tr>
<tr valign="top" class="odd"><th><a href="qitemeditorcreator.html">QItemEditorCreator</a></th><td>Makes it possible to create item editor creator bases without subclassing QItemEditorCreatorBase</td></tr>
<tr valign="top" class="even"><th><a href="qitemeditorcreatorbase.html">QItemEditorCreatorBase</a></th><td>Abstract base class that must be subclassed when implementing new item editor creators</td></tr>
<tr valign="top" class="odd"><th><a href="qitemeditorfactory.html">QItemEditorFactory</a></th><td>Widgets for editing item data in views and delegates</td></tr>
<tr valign="top" class="even"><th><a href="qitemselection.html">QItemSelection</a></th><td>Manages information about selected items in a model</td></tr>
<tr valign="top" class="odd"><th><a href="qitemselectionmodel.html">QItemSelectionModel</a></th><td>Keeps track of a view's selected items</td></tr>
<tr valign="top" class="even"><th><a href="qitemselectionrange.html">QItemSelectionRange</a></th><td>Manages information about a range of selected items in a model</td></tr>
<tr valign="top" class="odd"><th><a href="qlistview.html">QListView</a></th><td>List or icon view onto a model</td></tr>
<tr valign="top" class="even"><th><a href="qlistwidget.html">QListWidget</a></th><td>Item-based list widget</td></tr>
<tr valign="top" class="odd"><th><a href="qlistwidgetitem.html">QListWidgetItem</a></th><td>Item for use with the QListWidget item view class</td></tr>
<tr valign="top" class="even"><th><a href="qmodelindex.html">QModelIndex</a></th><td>Used to locate data in a data model</td></tr>
<tr valign="top" class="odd"><th><a href="qpersistentmodelindex.html">QPersistentModelIndex</a></th><td>Used to locate data in a data model</td></tr>
<tr valign="top" class="even"><th><a href="qsortfilterproxymodel.html">QSortFilterProxyModel</a></th><td>Support for sorting and filtering data passed between another model and a view</td></tr>
<tr valign="top" class="odd"><th><a href="qstandarditem.html">QStandardItem</a></th><td>Item for use with the QStandardItemModel class</td></tr>
<tr valign="top" class="even"><th><a href="qstandarditemeditorcreator.html">QStandardItemEditorCreator</a></th><td>The possibility to register widgets without having to subclass QItemEditorCreatorBase</td></tr>
<tr valign="top" class="odd"><th><a href="qstandarditemmodel.html">QStandardItemModel</a></th><td>Generic model for storing custom data</td></tr>
<tr valign="top" class="even"><th><a href="qstringlistmodel.html">QStringListModel</a></th><td>Model that supplies strings to views</td></tr>
<tr valign="top" class="odd"><th><a href="qstyleditemdelegate.html">QStyledItemDelegate</a></th><td>Display and editing facilities for data items from a model</td></tr>
<tr valign="top" class="even"><th><a href="qtableview.html">QTableView</a></th><td>Default model/view implementation of a table view</td></tr>
<tr valign="top" class="odd"><th><a href="qtablewidget.html">QTableWidget</a></th><td>Item-based table view with a default model</td></tr>
<tr valign="top" class="even"><th><a href="qtablewidgetitem.html">QTableWidgetItem</a></th><td>Item for use with the QTableWidget class</td></tr>
<tr valign="top" class="odd"><th><a href="qtablewidgetselectionrange.html">QTableWidgetSelectionRange</a></th><td>Way to interact with selection in a model without using model indexes and a selection model</td></tr>
<tr valign="top" class="even"><th><a href="qtreeview.html">QTreeView</a></th><td>Default model/view implementation of a tree view</td></tr>
<tr valign="top" class="odd"><th><a href="qtreewidget.html">QTreeWidget</a></th><td>Tree view that uses a predefined tree model</td></tr>
<tr valign="top" class="even"><th><a href="qtreewidgetitem.html">QTreeWidgetItem</a></th><td>Item for use with the QTreeWidget convenience class</td></tr>
<tr valign="top" class="odd"><th><a href="qtreewidgetitemiterator.html">QTreeWidgetItemIterator</a></th><td>Way to iterate over the items in a QTreeWidget instance</td></tr>
</table></p>
<a name="related-examples"></a>
<h3>Related Examples</h3>
<ul>
<li><a href="itemviews-dirview.html">Dir View</a></li>
<li><a href="itemviews-spinboxdelegate.html">Spin Box Delegate</a></li>
<li><a href="itemviews-pixelator.html">Pixelator</a></li>
<li><a href="itemviews-simpletreemodel.html">Simple Tree Model</a></li>
<li><a href="itemviews-chart.html">Chart</a></li>
</ul>
<p>
[Next: <a href="model-view-introduction.html">An Introduction to Model/View Programming</a>]
</p>
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<td width="20%" align="center"><a href="trademarks.html">Trademarks</a></td>
<td width="40%" align="right"><div align="right">Qt 4.6.3</div></td>
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